Chair headrest



- J. R; EMMERT- CHAIR HEADREST Original Filed May 20. 1921 ava/e23Patented Aug. 3, 1926,

TES

ATENT OFFICE.

JOHN RUSSELL EMMERT, OF CHICAGO, ILLINOIS, ASSIGNOR TO EMIL J'. PAIDARCOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CHAIR I-IE ADE/EST.

Original application filed May 20, 1921, Serial No. 471,178. Divided andthis application filed October 9,

This invention relates to improvements in adjustable head rests forchairs, and particularly for use in connection with barbers chairs,heretofore provided with locking means for their adjustment on ahorizontal axis, and with a detachable roller for the use of paper forsanitary purposes, and means for clamping the free end of the strip ofpaper in its operative position to the head rest.

The object of my invention is to dispense with the thumb-screwheretofore used for detachably securing the paper roller in itsoperative position, and to provide a simple and effective meanspermanently secured to the paper roller for yieldingly detachablymaintaining the roller in its operative position and the roll of paperfrom endwise movement thereon, and this particularly when connecting theroller with the head rest.

A further object of my invention is a simple and effective means readilyconvenient of access for detachably securing the free end of the paperin its operative position and for removing the used portion thereof inits operative position and severing such used portion from the adjacentportion of the strip of paper which is unused.

WVith these ends in View, my invention finds embodiment in certainfeatures of novelty in the construction, combination and arrangement ofparts by which the said objects are attained, all as hereinafter fullydescribed with reference to the accompanying drawings and moreparticularly pointed out in the claims.

In said drawings,

Fig. 1 illustrates in transverse section a head rest in which myinvention finds its embodiment.

Fig. 2 is a rear side elevation thereof.

Fig. 3 is an enlarged section taken on the line 3-3 of Fig. 1.

As illustrated in the drawings, the openlike opposing brackets or endplates 55 for the head rest, the flat bar 6, the angular bar 7 and thecoiled spring indicated at 8, connecting the end plates 55, areconstructed and located, as heretofore, in head rests for barberschairs, as are also the parallel lugs 9--9, projecting from the bar 7,and the pintle 10, connecting the head rest with the upright shank 11for its perpen- Serial No. 593,239.

dicular adjustment, and the hub 12 provided w th perforations 13 adaptedto cooperate wlth a locking bolt 14 for detachably locking the head restin its horizontal adjustment.

As a convenient means, however, for limlting the movement ofrthe headrest on 1ts horizontal axis, but which forms no part of my presentinvention, the hub 12 is provided with a lug 15 adapted to engage thebar 7, so that when the head rest is swung forwardly and downwardly onits horizontal axis, the lug 15 will engage the bar 7 and thereby stopthe further downward movement of the head rest as soon as theperforation 13 adjacent the. lug is moved to register with the bolt 14.

Bolt 14 has rigidly secured thereto, intermediate its ends, afinger-piece or washer 16, by means of a pin or screw 17, between whichplate and the downwardly projecting angular end of the bar 7 is confinedthe coiled spring 18, normally operating to thrust the bar through anyone of the per forations 13 in register with the bearing of the bolt 14:in the lug 9 adjacent thereto, this end-thrust of the bolt being limitedby the engagement of the finger-piece or washer 16 with a lug 19,projecting downwardly from the bar 7 In providing the bolt 14 with afingerpiece located in the position shown in the drawings, my inventionnot only provides for dispensing with a projection of the bolt through aside bar of the head rest for re tracting it from its locking positionby means of a thumb-operated cam on the outer end thereof, but for moreconvenient access to the bolt for its retract-ion, while at the sametime removing from the head rest a heretofore projection, notinfrequently engaging with and tearing the garment of the operator.

It is now to be observed that flat bar 6 is immovably secured to theopposing end plates of the head rest and is inwardly longitudinallyopposed by a shaft 20 parallel thereto and having its end bearings inplates 5, which shaft is provided at intervals of its length with teeth21 and is actuated by a coiled spring 22. One end of the spring 22 issecured to a perforated lug 23 on an end plate 5,.the other end of thespring being attached to a perforated lug 24 project,

ing rearwardly from the shaft 20, and whereby the spring 22 normallyoperates to project the teeth 21 on the shaft to contact with the end ofstrip of paper passed between the teeth and the bar 6 for detachablyclamping the paper against the bar.

The paper clamping shaft 20 is provided with a handle 25 projectingthrough one of the openings formed in the end plate 5 for releasing thepaper from the grip of the teeth 21 of the shaft 20, as may be, bypressing the handle downwardly against the re sistan'ce of the spring,the downward move ment of the handle being stopped by the opposing wallof the slot.

The construction above described provides for rigidly connecting andspacing the end plates of a head rest by means of the perfectly flat bar(3, whieh may be beveled at its lower edge, as indicated at 27, toprovide a severing edge for the paper and at the same time a fixe'd jawfor teeth mounted upon a shaft automatically actuated to clamp the freeend of a strip of paper overlying the usual spring-actuated leather ortexti e cover 26 commonly applied to head rests of this character, thepaper for which purpose is supported by a roller 28, as indicated inFig. 1,

This roller is provided at one end with a lined pin 29 adapted to haveits bearing in a boss 80 formed on one of the end plates 5, and for thepurpose of its connection with and bearing in a boss 31 on the otherplate 5 is bored out to receive a pintle 32, provided intermediate itsends with a lined collar '33, against which and against the closed endof the bored-outportion abuts a compression coiled spring 84, theoutward movement of the pin'tle 32 being limited by the end edge of aflanged eyelet The outer flanged end of the eyelet is enclosed by a cap36 circumfercntially surrounding the roller and in which the pintle 32has its bearing, which cap plate is pro vided with a circular flange 37,preferably formed integrally therewith for opposing the adjacent end ofa roll of paper 38 sleeved upon the roller and forming a stop,preventing an e'ndwise movement of the roll of paper when inserting theroller to its operative position.

By reference to Film 8, it will now be un derstood that when the rolleris disconnected from its end bearings, the spring will force the pintle32 outwardly and its collar 33 against the end of the flanged eyelet andthat for inserting the roller in its operative position, after sleevinga roll of paper thereon, followed by placing the end of the pintle 32 inits bearing 31, and then taking hold of the paper roll and pulling itforcibly against the flange, the spring will be compressed by the collarsufficiently for fixing pin 29 to pass across its bearing and enter thesame upon releasing the paper roll, while in the meantime the flange 37provides a stop preventing the paper roll, when grasped and pushed awayfrom the fixed pintle, for endwise movement on the roller, wheninserting and removing the roller from its bearing, from movement on theroller.

The essential function of the cap 36 is to support the flange 37 for theend of the roll and not necessarily to provide a hearing for the pintle32, for the reason that such a hearing might be formed in the outer endof the eyelet 35, the important function of which is to provide a stoplimiting the out ward thrust of the pintle.

A paper-supporting roller, constructed as above described, for use inconnection with an adjustable head rest, is an important feature of myinvention in that it is yieldingly adjustable in its bearings; that itmay be conveniently and quickly inserted and secured in its operativeposition, without the employment of any devices projecting outwardlyfrom the end plates 5 of a head rest, as, for example, when one of itsend bearings is internally screw-threaded to receive a tl1umbscrewpassing through the end plate, requiring, as it does, considerable t meand patience for registering the thumbscrew with the screw-threads inthe roller, and, besides, which thumb-screw further iore mars theappearance of the head rest,

renders the bearing of the roller unyielding, and, besides, projecting,as it does, outwardly beyond the surface of the end plate, has atendency to obstruct the movement of the operator of a barbers chairwhile shaving the occupant,

It is essential, for rapid and effective work, by a barber, a dentistand a surgeon operating upon the face or head of the occupant of achair, that the devices for adjusting the head rest therefor shall befree from any projections tending to obstruct the movement of either thebony or hands of the occupant; that the devices for operating theseveral adjustments of a head rest shall be conveniently and quicklyaccessible; that they shall not present projections tending or liable toobstruct the movement of either the body or the hands of the operator,and that the applied force for their operation shall be reduced to aminimum. It will now be apparent that it is to securing these severaladvantages that any invention is directed.

Having described my invention, what 1 claim and desire to secure byLetters Patent is: y

1. A head rest, provided with end plates one of which has an openingt-herethrough, in combination with a fix-ed clamping jaw secured to andrigidly connecting said end plates, a movable jaw provided at intervalsCir of its length with non-perforating teeth opposed to the face of saidfixed jaw, a spring for normally maintaining the movable jaw in itsclamping position, and an operating handle secured to the movable jaw,which handle terminates in substantially the plane of the outer surfaceof said plate and is ac cessible through the opening therein.

2. A head rest provided with end plates, one of which has an openingtherethrough, in combination with a fixed clamping jaw secured to andrigidly connecting said end plates, an oscillating jaw provided atintervals of its length with nonperforating teeth opposed to the surfaceof said fixed jaw, a spring connecting the oscillating jaw with one ofsaid plates for normally maintaining said jaw in its clamping position,and an operating handle secured to the oscillating jaw projectingthrough said opening with its outer end terminating in a plane adjacentthat of the outer surface of said end plate.

3. A head rest, provided with end plates one of which has an openingtherethrough, in combination with a fixed clamping jaw consisting of aflat bar the ends of which are secured to and rigidly connect the saidplates, an oscillating jaw provided at intervals of its length withteeth opposed to the flat surface of the fixed jaw, a spring adapted tonormally yieidingly maintain the teeth of the oscillating jaw in aclamping position opposed to the flat surface of the fixed jaw, and anoperating handle secured to the oscillating jaw projecting through theopening with its free end terminating adjacent the outer surface of saidplate.

4. The combination with a head rest, having end bracket plates adaptedfor supporting a paper roll sleeved there-on, provided at one end with afixed pintle and at its opposite end with a longitudinal chamber, amovable pintle located in said chamber, provided intermediate its endswith a collar fixed thereto, a coiled spring surrounding said pintleabutting against the collar an the end wall of said chamber, and aflanged eyelet projecting into said chamber and against the end of theroller, adapted to provide internally of the roller a stop for limitingthe outward movement of the movable pintle.

5. The combination with a head rest, having end plates rovided withclosed bearings, a roller a apted to support a roll of paper sleevedthereon, a fixed pintle for one end of said roller and a movable pintleprojecting into the other end thereof, a collar fixed to the movablepintle intermediate its ends, a spring surrounding said pintle abuttingat its ends respectively against said collar and the roller, a circularflange mounted upon the roller adjacent the movable pintle forming astop limiting the longitudinal movement of the paper on the roll,whereby on grasping and pushing the paper roll towa-rds the bearing ofthe movable pintle, the fixed pintle may be detached from its bearmg.

6. The combination with a head rest having end plates provided withclosed bearings, of a roller adapted to support a roll of paper sleevedthereon, provided with a fixed pintle at one end and a movable pintle atits other end adapted to be projected into said bearings, a collarsecured to the movable pintle intermediate its ends, a spring abuttingat one end against said collar and at its opposite end against theroller and surrounding said pintle, and a stop adapted to be engaged bythe collar for limiting the outward thrust of the movable pintle, acircular flange mounted upon the end of the roller adjacent the movablepintle for limiting the end thrust of the paper roll whereby the paperroll is utilized for inserting the movable pintle in its bearing andcompressing the spring for the insertion of the fixed pintle in itsbearing.

In witness whereof, I have hereunto set my hand this 5th day of October,1922.

J. RUSSELL EMMERT.

